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This book contains information on various virus families, with the focus on viruses causing prevalent infections in parts of developing countries in Africa and Asia. Viral proteins play an important role in their replication and infection potential, and are the main candidates for antiviral therapy and vaccines. While some antiviral vaccines are available for quite some time (e.g. MMR), there are regions in the world still struggling with some infections. This is especially the problem in regions where the morbidity rate from viral infections among young children is high. This situation requires urgent measures to put infections under control.

Virus diseases. --- Virus diseases --- Diagnosis.

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Are infectious diseases caused by novel entities, viruses that have rapidly evolved into more pathogenic forms, or viruses that have crossed species divides and become more virulent in their alternative host? These questions and how new diseases such as AIDS emerged have prompted renewed interest in the ways viruses originated and co-evolved with their hosts.Origin and Evolution of Viruses presents a full and clear description of general viral concepts and specific viral systems, and provides an excellent foundation to our understanding of how viruses emerged.This unique and com

Viruses --- Virus diseases. --- Evolution.

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Viruses --- Virus diseases --- Epidemics.

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Epstein-Barr virus (EBV) is a fascinating microorganism, as a "double-facetted" viral agent. After primary infection, it can persist throughout a person's lifetime in a latent form, from which it can reactivate following specific stimuli (i.e., immunodepression). Unlike other herpesviruses, EBV reactivates a countless number of times with such a high replication rate that it is unable to be controlled by conventional anti-herpesvirus drugs. Moreover, for various reasons, no vaccine is currently available in the market. This book presents a comprehensive overview of EBV, including information on its potential for oncogenic activity, its various isolates, and possible vaccine candidates.

Epstein-Barr virus diseases.

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Sandflies show distribution in a vast geographical area from Europe to Asia, Africa, Australia, and Central and South America where they can transmit a large number of viruses. Between these viruses, the most important are grouped into the Phlebovirus genus (family Phenuiviridae). Among them, several sandfly-borne phleboviruses cause self-limiting febrile disease (sandfly fever) or central and peripheral nervous system infections. Data concerning the geographic distribution of these phleboviruses has drastically increased during the last decade in both the new and the old worlds. The current situation depicts a high viral diversity with taxonomic groups containing human pathogenic and non-pathogenic viruses. This merits to provide insight to address the question of medical and veterinary public health impact of all these viruses, which are poorly studied. To do so, integrated and translational approaches must use ecological, epidemiological, serological and direct clinical evidence. Beside, other viruses transmitted by sandflies and belonging to Rhabdoviridae and Reoviridae families can also be of veterinary and public health importance. The chapter aims to provide a comprehensive view of the sandfly-borne viral pathogens of the public health impact on humans and other vertebrates in the old and new worlds.

Veterinary medicine. --- Virus diseases.